安科瑞 劉秋霞

Application of Acrel Wireless Temperature Measuring Product in Switchgear of Commercial Building in Hong Kong

1.背景信息 Background：

隨著電力工業的發展，對設備的安全性、可靠性要求越來越高。以往人工巡視設備的方法已逐漸弱化，在這種條件下，高壓設備的無線測溫系統應運而生。這種技術是將內置電池和無線發射模塊的測溫傳感器安裝于各測溫點，由于其體積小，且無需任何接線，其電氣安全性可以得到保證。傳感器周期性的將測溫數據無線發送至接收單元，接收單元可聯網將數據送至主站，以此實現一個區域系統的電氣溫度監測。
目前我國許多地方的電網公司、變電站、鋼鐵公司等都已在高壓設備上采用這種無線測溫監測技術。

電氣接點在線測溫裝置適用于高低壓開關柜內電纜接頭、斷路器觸頭、刀閘開關、高壓電纜中間頭、干式變壓器、低壓大電流等設備的溫度監測，防止在運行過程中因氧化、松動、灰塵等因素造成接點接觸電阻過大而發熱成為安全隱患，提高設備安全保障，及時、持續、準確反映設備運行狀態，降低設備事故率。

With the development of power industry, the safety and reliability of equipment are highly demanding. In the past, the method of manual inspection equipment has been gradually weakened, under this condition, the wireless temperature measurement system of high voltage equipment came into being. This technology is to install the temperature sensor with built-in battery and wireless transmitting module at each temperature measuring point. Because of its small size and no connection, its electrical safety can be guaranteed. The sensor periodically sends the temperature measurement data wirelessly to the receiver, and it can send the data to the main station on a network, so as to realize the electrical temperature monitoring of a regional system.

Currently, many power grid companies, substations and steel companies in China have adopted this wireless temperature monitoring technology on high voltage equipment.

The electric terminal on-line temperature measuring device is using for the temperature monitoring of cable connector, circuit breaker contact, knife switch, high voltage cable intermediate head, dry transformer, low voltage high current and other equipment in high and low voltage switch gear.To prevent excessive contact resistance caused by oxidation, loosening, dust and other factors during operation, heating becomes a hidden danger of safety, to improve the safety and security of equipment, to reflect the running state of equipment in time, continuously and accurately, and to reduce the accident rate of equipment.

2.項目信息 Project Brief：

中國香港UNS公司是一家智能用電服務公司，為各類商用型建筑提供智慧能源, 及配電維護服務。該項目有多面11kV的開關柜需要檢測線纜溫度，客戶咨詢安科瑞無線測溫產品，希望通過安科瑞ATE無線溫度傳感器和ATC接收器，對開關柜內的線纜進行溫度檢測，并通過RS485通訊將數據傳輸到后臺進行實時監控，從而可以合理預防開關柜內部過熱發生故障，影響設備正常運轉，避免安全隱患。

Hong Kong UNS is an smart power service company, providing intelligent energy solutions and distribution maintenance services for all kinds of commercial buildings. The project has 11kV of switchgear need to detect cable temperature, customers consult  Acrel wireless temperature measurement products, attending through Acrel ATE wireless temperature sensor and ATC receiver, the cable in the switchgear temperature detection, And through RS485 communication data transmission to the back platform for real-time monitoring, can effectively prevent overheating failure, affect the normal operation of equipment, avoid safety risks.

1. 測溫元件Temperature measuring instrument

1）溫度傳感器Temperature sensor

a. 電池供電型無線溫度傳感器Battery-powered wireless temperature sensor

安裝于發熱部位，采集溫度量并通過無線方式傳輸的傳感器。

 目前無線溫度傳感器有四款：

a. sensor installed in a heating area that collects temperature and transmits it wirelessly.

 There are currently four type wireless temperature sensors:

b. CT感應取電無線溫度傳感器CT induction radio wireless temperature sensor

安裝于斷路器觸頭、母排、電纜搭接點等大電流處，采集溫度量并通過無線方式傳輸的傳感器。

目前無線溫度傳感器有兩款：

b. sensor installed at a high current such as a circuit breaker contact, a bus bar, a cable lap contact, to collect temperature and transmit it wirelessly.

There are currently two wireless temperature sensors:

c.有線溫度傳感器 wired Temperature Sensor

安裝于低壓柜接點或變壓器繞組、電機繞組的測溫，采集溫度量并通過有線方式傳輸的傳感器。

目前有線測溫傳感器是Pt100：

Sensor installed in the contact of a high voltage cabinet, a transformer, or a motor winding to measure temperature, collect temperature and transmit it by wire.

Pt100 is wired temperature sensor at moment

2）接收/顯示單元Receiving /displaying unit

a. 接收單元Receiving unit

b. 顯示單元Displaying Unit

4推薦客戶方案Recommended Customer solutions

a.配置方案：高低壓柜內電氣接點無線測溫（不需要就地顯示）

a. Configuration solution: High and low voltage cabinet electrical contact wireless temperature measurement (without local display)

a.1 集中式centralization（ATC450-C）

說明：ATC450-C無線溫度收發器可連接60路無線溫度傳感器ATE100/100M/200/400/100P/200P，可接收多臺柜內的無線溫度傳感器溫度信號。

Instruction: ATC450-C wireless temperature transceiver can connect 60 wireless temperature sensors include ATE100/100M/200/400/100P/200P, support receive wireless temperature sensor temperature signals in multiple cabinets.

a.2 集中式（ATC600）

說明：ATC600無線溫度收發器可連接240路無線溫度傳感器ATE100/100M/200/400/100P/200P，可接收多臺柜內的無線溫度傳感器溫度信號,且具有透傳功能。

Instruction: ATC600 wireless temperature transceiver support connect 240 wireless temperature sensors include ATE100/100M/200/400/100P/200P, support receive wireless temperature sensor temperature signals in multiple cabinet with transparent transmission function.

b. 安裝實例Installation sample

參考文獻；Bibliography

1. Configuration of On-line Temperature Measurement Scheme for Electrical Terminal

2. The Application of Wireless Temperature Measuring Device in Low Voltage and Large Current Circuit Breaker

3. Solutions for enterprise micro-grid system